Vulcanizer.



No 636,237; I v Patentd Nov. 7, I899;

- J. E. BANCRDFT.

VULCANIZEB.

(No o e (Application filed Dec. 17, 1897. Bengwexll Apr. 7, 1899.) 2shee s I 1 ib Z a! 6 iii g1- I r --1 Q) 2.! T a I r Y n: 11 I L 22 11 7W 8 1f WW go I! l i 1 I .WYTNE55E5 l JNVENTUE; A w. m 2% WM K map 7711Mm: Nnnms Pzrzns 00.. womumu WASYHINGTON, D, c.

Patented Nov. 7, I899.

V U L C A N I 2 E R. (Application filed Dec, 17, 1897. Renewed Apr. 7,1859.)

2 Sheets+$heet 2,

(No Ilodel.)

2i IIE:

WJTNEjj/Si. v 7 4 can/1::

mi NORRIS PETERS 0O FHOTD-UYHO" wxsnmcron. a, c.

UNITED STATES PATENT Erica.

JAMES E. BANCROFTJOF TOLEDO, OHIO, ASSIGNOR TO THE NATIONAL CE- MENT ANDRUBBER MANUFACTURING COMPANY, OF SAME PLACE.

VULCANIZER.

SPECIFICATION forming part of Letters Patent No. 636,237, dated November7, 1899. Application filed December 17, 1897. Renewed April '7, 1899.Serial No. 712,162. (No model.)

To all whom it ntcty concern:

Be it known that I, JAMES E. BANCROFT, of Toledo, county of Lucas, andState of Ohio, have invented certain new and useful Improvements inVulcanizers; and'I do hereby declare that the following is a full,clear, and exact description of the invention,which will enable othersskilled in the art to which it appertains to make and use the same,reference IO being had to the accompanying drawings, and to the figuresof reference marked thereon, which form part of this specification.

My invention relates to a vulcanizer, and has for its object to providean apparatus for vulcanizing the traction surface of a tire wheninflated. I accomplish this object by providing a semicircular tubularthermal plate mounted upon a heating apparatus and provide connectionsbetween the thermal plate and a steam-generator supported upon a base,into which a caloric agent is intro duced, the combustion thereofgenerating the steam to a temperature to heat a crescentshaped tubewhich encircles the inflated tire and vulcanizes the reinforced rubberportion of the traction-surface of the tire.

In the drawings, Figure 1 is an elevation of a vulcanizer constructed inaccordance with my invention, showing the base and jacket 0 of thevulcanizer in section. Fig. 2 is a crosssection through the thermalplate on line a: 00, Fig. 1, showing the base of the inflated tire. Fig.3 is a transverse section on line y y, Fig. 1. Fig. 4 is a longitudinalvertical section 3 5 througha portion of the steam-generator, and Fig. 5is a part elevation through the thermal plate having a clampinengagement therewith for vulcanizing a portion of the tire. Fig. 6 is asection through a socket located in the steam-riser and secured to thethermal plate for vulcanizing a valve-stem to a tire.

In carrying outmy invention I provide a semicircular tubular thermalplate 1, adapted to embrace the inflated tire 2 for the purpose ofvulcanizing the reinforced material 3,

which is applied to the abraded traction-surface 4 of the tire. Thethermal plate 1 is supported upon a steam-generator 5 by means of ariser 6. The steam-generator 5 comprises 5 water-legs 7 and 8, having aplurality of transverse inclined watertubes 9 secured thereto. Tubes 9are constructed in the form of an elongated ellipsoid, as shown in Fig.3, and are connected to sections 10 of the waterlegs by bolts 11,comprising a gasket 12, interposed between the edge of the tubes, and apocket 13, formed in the side of the sections 10.

14 designates a projecting ring integral with the tubes 9, and, ifpreferred, I may weld the tubes to the sections 10. The ends of thewater-legs are closed by means of closureplates 15, which are secured tothe sections 10 by bolts or rivets circumferentially spaced in themargin of the sections 10 and the plates 15, a suitable gasket beinginterposed between the said plates. The steam-dome 16 of the generator 5is preferably made circular and is provided with a coupling member 17 tosecure the riser 610 the thermal plate 1. The riser 6 is provided with acut-off valve 18 and a union-coupling 19 for the purpose of easilydisconnecting the plate 1 from the generator 5 and substituting thermalplates of smaller arcs than shown in Fig. 1. Generator 5 is supportedupon a base 20, into which a caloric agent is introduced to provide thenecessary thermal units to operate the vulcanizer.

21 designates a thermometer secured to the generator and is adapted toindicate the temperature and coincident pressure generated.

22 designates a trycock communicating with the interior of the generator5 above the water-line. (Shown by the dotted line 23, Fig. 1.) Thethermal plate 1 is of a length to adapt itself to encircle tires ofvarious diameters by being severed. Upon each severed portion there isformed a projecting lug 24., through which passes a bolt 25 forcompressing the tire after being inserted into the thermal plate. Theintervening space 26 between the severed end portions 27 and 28 isclosed by a plate 29 between the severed end portion 27 and is inmovable contact with the end portion 28. In the construction of athermal plate adapted to vulcanize a portion of the tire I have provideda clamping device 30, comprising a yoke portion 31, encircling thethermal plate 1. Integral therewith and in a central position is a boss32, having a screwthreaded aperture through its vertical axis to engagecoincident screw-threads formed upon the stem 32, having movably securedupon its inner end 3 a clamp portion 35. The tire in this instance notbeinginflated is compressed between the thermal plate 1 and the clamp35, which may also be employed in connection with the thermal plate 1.(Illustrated in Fig. 1.) The steam-generator 5 is inclosed in a jacket36, which prevents the radiation of heat.

37 designates a socket which may be secured to the thermal plate 1 andis pendent therefrom within the interior 38 of the steamriser 6. Thesocket 37 is used for protecting the valve-stem, which is embedded ininsulating material and inserted into the socket during the operation ofvulcanizing a valvestem to the tire.

It will be seen that the steam may rise on all sides of the socket intothe thermal plate and therefore offer no obstruction to the passage ofsteam.

In the operation the abraded traction-surface of the tire is coated witha suitable preparation and inserted into the vulcanizer. The bolt 25 ofthe thermal plate 1 is adjusted and the tire inflated to bring thesurface to be reinforced into intimate contact with the thermal plate. Acaloric medium is now introduced in the base of the steam-generator 5,which being previously filled with water to the proper height the steamis generated by the combustion of the medium generating the thermalunits, which are quickly absorbed by the elongated ellipsoid water-tubesand generate the steam which rises through the riser 6 into the thermalplate 1, heating the same to the proper temperature to vulcanize theprepared portion or portions of the tire. The condensation of the steamin the thermal plate returns through the samepassage to the generator.

It will be seen from the aforegoing that my invention furnishes a simpleand inexpensive apparatus for reinforcing the abraded portion orportionsof the tire with a minimum amount of labor and expense.

A puncture in the tire may be repaired by preparing the puncturedportion in the proper manner and securing the tire to the thermal plateby a clamp device. (Illustrated in Fig. 6.)

The thermal plate 1 may be made to completely encircle an inflated tireor may be made in short arcs to repair punctures in the tire, as may bedesired.

IVhat I claim is-- 1. In an apparatus for Vulcanizing tires, a

base, a generator secured thereto, a tubular thermal plate, adapted toencircle an inflated tire, a riser between a thermal tube and thegenerator.

2. In an apparatus for vulcanizing tires, a semicircular tubular thermalplate, adapted to encircle an inflated tire, a steam-generator mountedupon a base comprising waterlegs, having communication with each otherthrough elongated ellipsoid tubes, slightly in clined, a riserconnecting the steam-dome with the thermal tube, and means for adjustingthe tube to various diameters.

3. In an apparatus for vulcanizing the reinforced material applied tothe abraded traction-surface of a tire, a steam-generator supported upona base, comprising a plurality of elongated ellipsoid water-tubes toestablish a connection with the water-legs upon opposite sides, asteam-dome, a riser having located therein a cut-off valve, a union foreasily detaching the riser from the steam-dome, a thermometer secured tothe generator, a semicircular tubular thermal plate supported upon theriser, and bent in circular formation to embrace within itself a smallerdiameter, a tire mounted upon a wheel, the thermal tube being severed,and having formed upon the opposite severed portion projecting lugs,whereby the severed portions may be closed or expanded by suitablemeans, and a plate secured to one end of the severed portion and in freecontact with the opposite section adapted to inclose the interveningspace between the expanded sections.

4. In an apparatus for vulcanizing tires, a steam-generator supportedupon the base, means for introducing a caloric agent in the base, atubular thermal plate supported upon a steam-riser of circularformation, a clamping device adapted to secure the tire to the thermaltube, a thermometer and a try-cock.

5. In an apparatus for vulcanizing tires, a steam-generator supportedupon a base, a steam-riser, a tubular thermal plate supported thereon,being of circular formation, a socket portion secured to the thermalplate,and pendent therefrom within the steam-riser, whereby a valve-stemmay be embedded Within the socket for securing a valve-stem to the tire.

In testimony that I claim the foregoing as my own I hereby affix mysignature in presence of two witnesses.

JAMES E. BANOROFT.

IVitnesses:

WILLIAM WEBSTER, MAUD SCHUMACHER.

